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    <meta name="description" content="文章浏览阅读116次。&quot;.,[^\s]&quot; 是一个正则表达式，它匹配一个字符串中的任意内容，然后匹配一个逗号，最后匹配任意数量的非空白字符。其中，&quot;.&quot; 表示匹配任意单个字符，&quot;&quot; 表示匹配前面的字符 0 次或多次。&quot;[^\s]&quot; 表示匹配任意一个非空白字符，&quot;\s&quot; 表示空白字符，&quot;^&quot; 表示否定。因此，&quot;[^\s]&quot; 就表示匹配任意一个非空白字符。最后的 &quot;&quot; 表示匹配前面的字符 0 次或多次，也就是匹配任意数量的...">
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                <h1 class="title-article" id="articleContentId">".*,[^\\s]*"解释一下这个的意思</h1>
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                        <span class="time">于&nbsp;2023-02-15 17:36:37&nbsp;发布</span>
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  <p>".<em>,[^\s]</em>" 是一个<a href="https://so.csdn.net/so/search?q=%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F&amp;spm=1001.2101.3001.7020" target="_blank" class="hl hl-1" data-report-click="{&quot;spm&quot;:&quot;1001.2101.3001.7020&quot;,&quot;dest&quot;:&quot;https://so.csdn.net/so/search?q=%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F&amp;spm=1001.2101.3001.7020&quot;,&quot;extra&quot;:&quot;{\&quot;searchword\&quot;:\&quot;正则表达式\&quot;}&quot;}" data-tit="正则表达式" data-pretit="正则表达式">正则表达式</a>，它匹配一个字符串中的任意内容，然后匹配一个逗号，最后匹配任意数量的非空白字符。</p> 
  <p>其中，"." 表示匹配任意单个字符，"<em>" 表示匹配前面的字符 0 次或多次。"[^\s]" 表示匹配任意一个非空白字符，"\s" 表示空白字符，"^" 表示否定。因此，"[^\s]" 就表示匹配任意一个非空白字符。最后的 "</em>" 表示匹配前面的字符 0 次或多次，也就是匹配任意数量的非空白字符。</p> 
  <p>综上所述，这个正则表达式的意思就是匹配任意内容，然后匹配一个逗号，最后匹配任意数量的非空白字符。</p> 
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                    ".*,[^\\s]*"解释一下这个的意思
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                    ".,[^\s]" 是一个正则表达式，它匹配一个字符串中的任意内容，然后匹配一个逗号，最后匹配任意数量的非空白字符。其中，"." 表示匹配任意单个字符，"" 表示匹配前面的字符 0 次或多次。"[^\s]" 表示匹配任意一个非空白字符，"\s" 表示空白字符，"^" 表示否定。因此，"[^\s]" 就表示匹配任意一个非空白字符。最后的 "" 表示匹配前面的字符 0 次或多次，也就是匹配任意数量的...
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				<div class="desc ellipsis-online ellipsis-online-1">这是一个介绍uboot的start.s函数的文档，写的相当详细，如果你正在从事相关的工作或者相应的学习，你可以参考参考，希望对你有所帮助！</div>
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					<div class="left ellipsis-online ellipsis-online-1">正则表达式[\s\S]*与[\w\W]* 什么意思</div>
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				<div class="desc ellipsis-online ellipsis-online-1">问：
例如：[a-z]表示从a到z之间的任意一个。
不是这样的吗？谁能给我<em>解释一下</em>[ ]的所有用法？感谢
答：
是完全通配的意思，\s是指空白，包括空格、换行、tab缩进等所有的空白，而\S刚好相反
这样一正一反下来，就表示所有的字符，完全的，一字不漏的。
另外，[]这个符号，表示在它里面包含的单个字符不限顺序的出现，比如下面的正则：
[ace]*
这表示，只要出现a/c/e这三个任意的字母，都会被匹配

[\s]表示，只要出现空白就匹配
[\S]表示，非空白就匹配
\w 匹配包括下划线的任何单词字符。等价于“[A-Za-z0-9_]”。
\W 匹配任何非单词字符。等价于“[^A-Za-z0-</div>
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				<div class="desc ellipsis-online ellipsis-online-1">字符\
意义：对于字符，通常表示按字面意义，指出接着的字符为特殊字符，\不作解释。
例如：/b/匹配字符'b',通过在b&nbsp;前面加一个反斜杠\，也就是/\b/，则该字符变成特殊字符，表示
匹配一个单词的分界线。
或者：&nbsp;
对于几个字符，通常说明是特殊的，指出紧接着的字符不是特殊的，而应该按字面解释。
例如：*是一个特殊字符，匹配任意个字符(包括0个字符)；例如：/a*/意味匹配0个或多个</div>
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					<div class="left ellipsis-online ellipsis-online-1">基本正则表达式</div>
				</a>
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				<div class="info display-flex">
					<span class="info-block time">12-21</span>
					<span class="info-block read"><img class="read-img" src="./_._,[^__s]__解释一下这个的意思-CSDN博客_files/readCountWhite.png" alt="">
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				<div class="desc ellipsis-online ellipsis-online-1">一些比较常用的正则表达式
手机号:(+86|0086)?\s1[345678][0-9]{9}
匹配QQ号：[1-9][0-9]{4,9}
匹配Email地址的正则表达式：\w+@[0-9a-zA-Z]{2,}(.[a-zA-Z0-9]{2,3}){1,2}
匹配中文字符的正则表达式： [\u4e00-\u9fa5]
匹配空白行的正则表达式：\n\s\r
匹配首尾空白字符的正则表达式：^\s|\s...</div>
			</a>
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	</div>
</div>
		
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					<div class="left ellipsis-online ellipsis-online-1">[Perl]Perl匹配非空白字符[^\s]</div>
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				<div class="desc ellipsis-online ellipsis-online-1">Perl匹配非空白字符

​​​​​

在Perl中，[^\s]代表非空白符。
	[^\s]+表示一次或多次匹配非空白符。
	^在括号[]外时表示开始，即行首。
	^在括号[]内时表示将第一位取反，所以\s是空白，在括号内[^\s]就是非空白。
...</div>
			</a>
		</div>
	</div>
</div>
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					<div class="left ellipsis-online ellipsis-online-1">replace(/(^\s*)|(\s*$)/g, ““)什么意思</div>
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				<div class="desc ellipsis-online ellipsis-online-1">/(^\s*)|(\s*$)/g</div>
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					<div class="left ellipsis-online ellipsis-online-1">常用正则表达式</div>
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				<div class="desc ellipsis-online ellipsis-online-1">a.有四种钱的表示形式我们可以接受"10000.00"和"10,000.00",和没有"分"的"10000"和。e.必须说明的是,小数点后面至少应该有1位数,所以"10."是不通过的,但是"10"和"10.2"是通。电话号码("XXX-XXXXXXX"、"XXXX-XXXXXXXX"、"XXX-XXXXXXX"、"XXX。b.这表示任意一个不以0开头的数字,但是,这也意味着一个字符"0"不通过,所以我们采用下面的。为钱总不能是负的吧。...</div>
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				<div class="desc ellipsis-online ellipsis-online-1">Map 在使用过程中不断的往里面存放数据，当数量达到了 16 * 0.75 = 12 就需要将当前 16 的容量进行扩容，而扩容这个过程涉及到 rehash、复制数据等操作，所以非常消耗性能。  因此通常建议能提前预估 HashMap 的大小...</div>
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</div>
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					<div class="left ellipsis-online ellipsis-online-1">/(^\s*)|(\s*$)/g</div>
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					<a href="https://blog.csdn.net/plok741" target="_blank" data-report-query="spm=1001.2101.3001.6650.12&amp;utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7ERate-12-12850843-blog-129555681.235%5Ev38%5Epc_relevant_anti_vip&amp;depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7ERate-12-12850843-blog-129555681.235%5Ev38%5Epc_relevant_anti_vip&amp;utm_relevant_index=13"><span class="blog-title">大兵说事</span></a>
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					<span class="info-block time">10-18</span>
					<span class="info-block read"><img class="read-img" src="./_._,[^__s]__解释一下这个的意思-CSDN博客_files/readCountWhite.png" alt="">
					3340
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				<div class="desc ellipsis-online ellipsis-online-1">用正则表达式将前后空格用空字符串替代:replace(/(^\s*)|(\s*$)/g,&nbsp;"")



^表示字符串必须以后面的规则开头, 在这里就是说字符串必须以\s*开头.

\s 是空格的意思, * 表示有0个或多个

\s* 就是有0个或多个空格

(^\s*) 表示的就是以0个空格或者多个空格开头

| 表示或的意思, 也就是满足| 左边的也成立, 满足 | 右面</div>
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					<div class="left ellipsis-online ellipsis-online-1">正则匹配空字符串 /(^\s)/</div>
					<div class="tag">热门推荐</div>
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					<span class="info-block time">12-07</span>
					<span class="info-block read"><img class="read-img" src="./_._,[^__s]__解释一下这个的意思-CSDN博客_files/readCountWhite.png" alt="">
					1万+
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				<div class="desc ellipsis-online ellipsis-online-1">/(^\s)/

诸多资源都提供的是/(^\s*)/，关键就在与这个‘* ’，作为贪婪匹配，代表会匹配他前面的元字符出现0次或者任意次，那么在一些应用场景中，就会使得匹配不成功；
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					<div class="left ellipsis-online ellipsis-online-1">正则表达式/(^\s*)|(\s*$)/g意思</div>
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			<div class="info-box display-flex">
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					<span class="info-block time">06-27</span>
					<span class="info-block read"><img class="read-img" src="./_._,[^__s]__解释一下这个的意思-CSDN博客_files/readCountWhite.png" alt="">
					2160
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				<div class="desc ellipsis-online ellipsis-online-1">包含以空格、回车符等字符开头 或者 空格、回车符等字符结尾 的字符串，可过滤出所有空格、回车符的字符
转载于:https://www.cnblogs.com/beautiful-code/p/9235498.html...</div>
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					<div class="left ellipsis-online ellipsis-online-1">常用的正则表达式</div>
				</a>
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				<div class="desc ellipsis-online ellipsis-online-1">1。^\d+$ //匹配非负整数（正整数 + 0）2。^[0-9]*[1-9][0-9]*$ //匹配正整数3。^((-\d+)|(0+))$ //匹配非正整数（负整数 + 0）4。^-[0-9]*[1-9][0-9]*$ //匹配负整数5。^-?\d+$ //匹配整数6。^\d+(\.\d+)?$ //匹配非负浮点数（正浮点数 + 0）7。^(([0-9]+\.[0-9]*[1-9]...</div>
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                    <span class="code-comments">S7-1200怎么用wait指令</span>
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                    <a href="https://blog.csdn.net/Naturesicence" class="user-name" target="_blank">AIics: </a>
                    <span class="code-comments">训练集的效果不如测试集原因:你是想说欠拟合吧</span>
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                    <a href="https://blog.csdn.net/m0_71610637" class="user-name" target="_blank">m0_71610637: </a>
                    <span class="code-comments">没法判断二维数组相同啊</span>
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